The Saphir 550 with Rubin 520 is a single wheel grinder and polisher of recent generation with an innovative grinding and polishing head for working wheels Ø 250 – 300 mm. The head RUBIN 520 is equipped with an automatic protective hood and sets a new standard for operational safety. Single and central pressure, memory function, integrated dosing system, material removed measurement are only a few of the possibilities. Motor-driven height setting with pneumatic clamping and all characteristics of the basic unit Saphir 350 meet the highest demands.The removal height can be pre-determined with 0.01 mm accuracy. The material removed measurement takes place automatically. After reaching the preset value, the machine switches off.